Boundary integral equation approach to multi-mode Y-Matrix characterization of multi-ridged sections in circular waveguide

Author

Schroeder, W. ; Guglielmi, M.

Author_Institution

Dept. of Electr. Eng., Duisburg Univ., Germany

Volume

3

fYear

1996

fDate

17-21 June 1996

Firstpage

1849

Abstract

Aiming at an accurate and effective CAD procedure for circular waveguide (CW) dual-mode filters without tuning screws, the boundary integral equation method (BIEM) is applied to TM/TE mode analysis of Multi-Ridge circular waveguide (MRCW) and evaluation of CW-MRCW mode coupling coefficients to obtain the Multi-Mode network (Y-Matrix) representation (MMNR) of CW-MRCW transitions. A novel multiple eigenvalue search algorithm assures completeness of the modal spectrum up to large mode indices (>100) in the presence of accidental degeneracies and clusters of eigenvalues.

Keywords

boundary integral equations; circular waveguides; eigenvalues and eigenfunctions; matrix algebra; ridge waveguides; waveguide theory; CAD; CW-MRCW transitions; TM/TE modal spectrum; Y-matrix; boundary integral equation; dual-mode filter; mode coupling coefficients; multimode network representation; multiple eigenvalue search algorithm; multiridge circular waveguide; tuning; Clustering algorithms; Cutoff frequency; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Fasteners; Filters; Integral equations; Space technology; Tellurium; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1996., IEEE MTT-S International

Conference_Location

San Francisco, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-3246-6

Type

conf

DOI

10.1109/MWSYM.1996.512306

Filename

512306